. >> president obama, first lady michelle obama, the clintons, oprah will all join world leaders for mandela's state funeral next sunday. this sunday will be a national day of prayer and reflection in south africa. tuesday will be the official public memorial. here in the u.s. the president did order flags to fly at half staff until sunday in honor of the former south african president. >>> the most visual outpouring of grief and celebration of his life is taking place outside mandela's home in a suburb of johannesburg. alphonso van marsh is there. >> reporter: people streamed down the streets toward nelson mandela's johannesburg home singing songs of praise, prayer and freedom. they gathered to pay tribute to the former south african president who died at 95 surrounded by family not far from here. this man says he's not mourning. >> i get to celebrate his life. we cry among our joy and laugh and remember the good. >> reporter: some gave speeches. while others led group prayers remembering the man who ushered in democracy for all of south africa's people. >> deep in our heart and min